Layout Frames are a Perfect Way to Stay in Shape! As stained glass artists, we know it can be frustrating when your project grows or changes shape during the assembly process and now with the 12" Circle Layout Frame, there is finally a simple way to prevent this from happening! Hold your circle projects secure while you solder them or use them to carefully retain the size of your project while cutting and sizing your pieces. Layout Frames are precision cut to make sure your projects maintain their shape, every time. Perfect for sun catchers. Frame makes a 12" circle project. Frame measures 3/8" thick. Color may vary. Snowflake project created by artist Steena Gaut. Pinwheel project created by artist Sharyn Johnson.